# Detect Hidden Device vs Spy Hearing

The clearest difference is update cadence: Spy Hearing at every 3 weeks against Detect Hidden Device's every 3 months. Detect Hidden Device's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Detect Hidden Device sells 2 in-app purchases, starting at $2.99 per 7 days and Spy Hearing sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Detect Hidden Device ships an update every 3 months, Spy Hearing every 3 weeks. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Detect Hidden Device | Spy Hearing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (45 ratings)](https://appshunter.io/ios/app/spy-hearing/id6766551476/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Subscription |
| Size | 60 MB | 4 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Strathern](https://appshunter.io/developer/1785242207) | [Muhammad Ajmal](https://appshunter.io/developer/1370561935) |

## What reviewers say

### Detect Hidden Device

[App page](https://appshunter.io/ios/app/detect-hidden-device/id6751191366)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Trial | $2.99 | per 7 days |
| Premium Yearly | $29.99 | per year |


### Spy Hearing

[App page](https://appshunter.io/ios/app/spy-hearing/id6766551476)

Amplify distant sounds and record audio with your phone. This tool offers enhanced listening capabilities with various EQ presets and acoustic space options. It processes audio on-device for privacy and works with multiple headphone types.

**Highlights:** Up to 16x audio amplification, 5 tuned EQ presets, 9 acoustic space settings, Background recording, Noise cancellation, 8-band parametric EQ

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Detect Hidden Device free?

Detect Hidden Device is free to download, with in-app purchases available.

### Is Spy Hearing free?

Spy Hearing is free to download, with in-app purchases available.

### Do Detect Hidden Device or Spy Hearing have ads?

Neither Detect Hidden Device nor Spy Hearing shows ads.

### Which is updated more often, Detect Hidden Device or Spy Hearing?

Detect Hidden Device ships an update every 3 months, and Spy Hearing every 3 weeks. Most recently, Detect Hidden Device was updated on September 19, 2026 and Spy Hearing on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*